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Journal of Integrative Plant Biology 2011年第1期53卷 14-24页

作者： Chunyan gong tang li Qi li Longfeng Yan Tai Wang Research Center forMolecular &-Deveiopmental Biology Key Laboratory of Photosynthesis & Environmental Molecular Physiology Institute of Botany. the Chinese Academy of Sciences and National Center for Plant Gene Research Beijing 100093 China graduate School of the Chinese Academy of Sciences. Beiiina 100049 China

Rad21 and its meiotic counterpart Rec8, the key components of the cohesin complex, are essential for sister chromatid cohesion and chromosome segregation in mitosis and meiosis, respectively. In contrast to yeast and vertebrates, which have only two RAD211REC8 genes, the rice genome encodes four Rad21/Rec8 proteins. Here, we report on the cloning and characterization of OsRAD21-2 from rice （Oryza sativa L.）. Phylogenetic analysis of the full-length amino acids showed that OsRad21-2 was grouped into the plant-specific Rad21 subfamily. Semi-quantitative reverse transcription-polymerase chain reaction revealed OsRAD21-2 preferentially expressed in premeiotic flowers. Further RNA in situ hybridization analysis and promoter：：β-glucuronidase staining indicated that OsRAD21-2 was mainly expressed in actively dividing tissues including premeiotic stamen, stem intercalary meristem, leaf meristem, and root pericycle. Ectopic expression of OsRAD21.2 in fission yeast resulted in cell growth delay and morphological abnormality. Flow cytometric analysis revealed that the *** cells were arrested in g2 phase. Our results suggest that OsRad21-2 functions in regulation of cell division and growth.

关键词： genomes Meristems growth Hybridization Rice Cells Lymphocytes Yeasts

Enhancing strength and creep resistance of Mg-gd-Y-Zn-Zr alloy by substituting Mn for Zr

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Journal of Magnesium and Alloys 2019年第3期7卷 388-399页

作者： C.Xu T.Nakata g.H.Fan X.W.li g.Z.tang S.Kamado School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001PR China Department of Mechanical Engineering Nagaoka University of TechnologyNagaoka 940-2188Japan School of Material Science and Engineering Harbin University of Science and TechnologyHarbin 150040PR China

The age-hardening behavior and mechanical properties of the extruded Mg-2gd-1.2Y-0.5Zn(at.%)alloy with Zr or Mn additions were *** results show that Mn added alloy exhibits more remarkable age-hardening response than Zr added alloy,which is attributed to the fact that partitioning of Mn into the β'phases,β'precipitates and long period stacking ordered(LPSO)phases leads to the decrement in(g d+Y)concentrations in the second phases,facilitating the precipitation during aging *** peak-aged alloys show bimodal microstructure comprising the fine DRXed grains with nano-sized β phases pinned at DRXed grain boundaries as well as coarse worked grains with strong fiber *** strength and good thermal stability were obtained in both peak-aged Mn and Zr added *** the peak-aged Mn added alloy shows higher strength and superior creep resistance due to its denser β'precipitates,thin LPSO phases and γ'precipitates and higher area fraction of worked grains with strong fiber *** 0.2% tensile proof stress and ultimate tensile strength of peak-aged Mn added alloy reach up to 454 MPa and 508 MPa,respectively,with elongation of 3.2%at room *** minimum creep rate of the peak-aged Mn added alloy at 250℃/150 MPa is 2.4 × 10^-8 s^-1,which is superior than previously reported extruded Mg-gd based alloys.

关键词： Magnesium alloys Rare earth(RE) Precipitation Mechanical properties Creep resistance

Synthesis,Crystal Structure,and Magnetic Property of One 3D Nickel Coordination Polymer Based on 2-Hydroxy-5-(3',5'-terephthalic acid)Pyridine and 1,4-Bis(1-imdazoly)benzene

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Chinese Journal of Structural Chemistry 2015年第10期34卷 1519-1524页

作者： tang Pei-Qin HAO Lu-Jiang FAN li-Ming liU Xin-Zheng li Bin ZHANg Xiu-tang Advanced Material Institute of Research College of Chemistry and Chemical EngineeringQilu Normal University College of Biological Engineering Qilu University of Technology State Key Laboratory of Crystal Materials Shandong University

One novel nickel coordination polymer, {[Ni（OTP）（bib）1.5（H2O）]·2H2O}n（1, H2 OTP = 2-hydroxy-5-（3＇,5＇-terephthalic acid） pyridine, bib = 1,4-bis（1-imdazoly）benzene）, has been synthesized and characterized by elemental analysis（EA）, IR, powder X-ray diffraction（PXRD）, and thermogravimetric（Tg） analyses. The crystal of 1 crystallizes in monoclinic, space group P21/n with a = 12.2860（5）, b = 13.8246（6）, c = 19.0140（8） A, β = 104.3870（1）°, V = 3128.2（2） A3, Z = 4, C32H28N7 Ni O8, Mr = 697.32, Dc = 1.481 g/cm^3, F（000） = 1444 and μ（Mo Kα） = 0.684 mm-1. The final R = 0.0704 and w R = 0.1764 for 5485 observed reflections with I 2σ（I） and R = 0.1087 and wR = 0.2010 for all data. Topology analysis reveals that complex 1 is a 3D 2-fold interpenetrated {4^4·6^6}-nov net based on the 1D [Ni（OTP）]n chain and the 2D [Ni2（bib）3]n sql sheet. And the variable-temperature magnetic susceptibility measurements exhibit weak antiferromagnetic coupling interaction.

关键词： 2-hydroxy-5-(3',5'-terephthalic acid)pyridine 1,4-bis(1-imdazoly)benzene nickel topology magnetic property

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基于密度泛函理论纤维素热解机理热力学研究

原子与分子物理学报 2025年第5期42卷 1-6页

作者：周俊杰陈曦汤松臻李智聪郑州大学机械与动力工程学院郑州450001

为了探究纤维素的热解机理,参考相关的实验结果,以纤维素单体模化物为研究对象,采用密度泛函理论的方法,以b3lyp/6-31++g(d,p)为基,对纤维素单体热解反应生成乙醇醛和CO_(2)小分子的反应机理进行动力学研究.纤维素单体热解生成乙醇醛和C... 详细信息

为了探究纤维素的热解机理,参考相关的实验结果,以纤维素单体模化物为研究对象,采用密度泛函理论的方法,以b3lyp/6-31++g(d,p)为基,对纤维素单体热解反应生成乙醇醛和CO_(2)小分子的反应机理进行动力学研究.纤维素单体热解生成乙醇醛和CO_(2)的反应路径为纤维素单体首先开环,之后裂解生成四糖片段M2和乙醇醛P1,能垒最高为339.1 kJ/mol,四糖片段M2经过脱水形成烯酮结构后再与水分子作用生成羧基,最后发生脱羧反应生成CO_(2),能垒较高为290.1 kJ/mol,不容易发生,整个过程放出98.9 kJ/mol的热量,并对路径反应物、中间体和过渡态进行几何构型全优化,过渡态的振动和频率计算,同时进行不同温度下(400 K、600 K、800 K、1000 K、1200 K)热解过程的热力学分析,对纤维素的热解机理研究将对生物质的热裂解机理研究有重要的意义.

关键词：纤维素热解密度泛函理论反应机理

Formation control of bromate and trihalomethanes during ozonation of bromide-containing water with chemical addition: Hydrogen peroxide or ammonia?

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Journal of Environmental Sciences 2021年第12期33卷 111-118页

作者： Zhengdi Wu Yubin tang Weiwei li Zhimin Qiang Huiyu Dong Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212100China Engineering Design Institute The Sixth Engineering Bure CrecBeijing 100036China University of Chinese Academy of Sciences Beijing 100049China

To ensure the safety of drinking water,ozone (O3) has been extensively applied in drinking water treatment plants to further remove natural organic matter (NOM).However,the surface water and groundwater near the coastal areas often contain high concentrations of bromide ion (Br-).Considering the risk of bromate (Br O3-) formation in ozonation of the sand-filtered water,the inhibitory efficiencies of hydrogen peroxide (H2O2) and ammonia(NH3) on Br O3-formation during ozonation process were *** addition of H2O2effectively inhibited Br O3-formation at an initial Br-concentration amended to 350μg/*** inhibition efficiencies reached 59.6 and 100%when the mass ratio of H2O2/O3was 0.25and>0.5,*** UV254and total organic carbon (TOC) also decreased after adding H2O2,while the formation potential of trihalomethanes (THMs FP) increased especially in subsequent chlorination process at a low dose of *** control the formation of both Br O3-and THMs,a relatively large dose of O3and a high ratio of H2O2/O3were generally ***3addition inhibited Br O3-formation when the background ammonia nitrogen(NH3–N) concentration was *** was no significant correlation between Br O3-inhibition efficiency and NH3dose,and a small amount of NH3–N (0.2 mg/L) could obviously inhibit Br *** oxidation of NOM seemed unaffected by NH3addition,and the structure of NOM reflected by synchronous fluorescence (SF) scanning remained almost unchanged before and after adding *** the formation of Br O3-and THMs,the optimal dose of NH3was suggested to be 0.5 mg/L.

关键词： Bromate Trihalomethanes Ozone Hydrogen peroxide Ammonia Water treatment

Integrated vacuum pressure swing adsorption and Rectisol process for CO_(2) capture from underground coal gasification syngas

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Chinese Journal of Chemical Engineering 2023年第5期57卷 265-279页

作者： Jian Wang Yuanhui Shen Donghui Zhang Zhongli tang Wenbin li The Research Center of Chemical Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

An integrated vacuum pressure swing adsorption(VPSA) and Rectisol process is proposed for CO_(2) capture from underground coal gasification(UCg) syngas. A ten-bed VPSA process with silica gel adsorbent is firstly designed to pre-separate and capture 74.57% CO_(2) with a CO_(2) purity of 98.35% from UCg syngas(CH_(4)/CO/CO_(2)/H_(2)/N_(2)= 30.77%/6.15%/44.10%/18.46%/0.52%, mole fraction, from Shaar Lake Mine Field,Xinjiang Province, China) with a feed pressure of 3.5 MPa. Subsequently, the Rectisol process is constructed to furtherly remove and capture the residual CO_(2)remained in light product gas from the VPSA process using cryogenic methanol(233.15 K, 100%(mass)) as absorbent. A final purified gas with CO_(2) concentration lower than 3% and a regenerated CO_(2) product with CO_(2) purity higher than 95% were achieved by using the Rectisol process. Comparisons indicate that the energy consumption is deceased from 2.143 MJ·kg^(-1) of the single Rectisol process to 1.008 MJ·kg^(-1) of the integrated VPSA & Rectisol process, which demonstrated that the deployed VPSA was an energy conservation process for CO_(2) capture from UCg syngas. Additionally, the high-value gas(e.g., CH_(4)) loss can be decreased and the effects of key operating parameters on the process performances were detailed.

关键词： Underground coal gasification Vacuum pressure swing adsorption Rectisol process CO_(2)capture Integrated process

Flammable gases produced by TiO_(2) nanoparticles under magnetic stirring in water

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Friction 2022年第7期10卷 1127-1133页

作者： Pengcheng li Chongyang tang Xiangheng XIAO Yanmin JIA Wanping CHEN School of Physics and Technology Wuhan UniversityWuhan 430072China School of Science Xi'an University of Posts and TelecommunicationsXi'an 710054China

The friction between nanomaterials and Teflon magnetic stirring rods has recently drawn much attention for its role in dye degradation by magnetic stirring in *** the friction between TiO_(2) nanoparticles and magnetic stirring rods in water has been deliberately enhanced and *** much as 1.00 g TiO_(2) nanoparticles were dispersed in 50 mL water in 100 mL quartz glass reactor,which got gas-closed with about 50 mL air and a Teflon magnetic stirring rod in *** suspension in the reactor was magnetically stirred in *** gases of 22.00 ppm CO,2.45 ppm CH_(4),and 0.75 ppm H_(2) were surprisingly observed after 50 h of magnetic *** reference,only 1.78 ppm CO,2.17 ppm CH_(4),and 0.33 ppm H_(2) were obtained after the same time of magnetic stirring without TiO_(2) *** magnetic stirring rods were simultaneously employed to further enhance the stirring,and as much as 30.04 ppm CO,2.61 ppm CH_(4),and 8.98 ppm H_(2) were produced after 50 h of magnetic stirring.A mechanism for the catalytic role of TiO_(2) nanoparticles in producing the flammable gases is established,in which mechanical energy is absorbed through friction by TiO_(2) nanoparticles and converted into chemical energy for the reduction of CO_(2) and H_(2)*** finding clearly demonstrates a great potential for nanostructured semiconductors to utilize mechanical energy through friction for the production of flammable gases.

关键词： friction magnetic stirring catalysis CO_(2)reduction TiO_(2)

Supplying active lithium to single-crystal li(Ni_(0.90)Co_(0.05)Mn_(0.05))_(0.98)Ta_(0.02)O_(2) with li_(2)MnO_(3) coating served as cathode for li-ion batteries

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Particuology 2024年第12期95卷 303-318页

作者： li Dong Xiaodong guan Yang Zhou Shibao tang Feng Chen School of Materials Science and Engineering Suzhou University of Science and TechnologySuzhou215009China Suzhou Huayi New Energy Technology Co. Ltd.Suzhou215433China Xingna Energy(Suzhou)Co. Ltd.Suzhou215000China Chenguang High Performance Fluorine Material Innovation Center in Sichuan University of Science and Engineering Zigong643000China

Ni-rich layered oxide with Ni molar content larger than 90%was regarded as an extremely promising candidate for cathode material applied in lithium-ion batteries owing to the significant discharging capacity and low ***,rigorous cycling attenuation resulted from the crystal structure collapse and unstable particles interface deeply restrained the commercial *** the work,liNi_(0.90)Co_(0.05)Mn_(0.05)O_(2) was modified by Ta5+doping and li_(2)MnO_(3) covering,which was aimed to enhance the structure stability,defend the electrolyte attacking and promote li+migration during *** material characterization demonstrated the cathodes after Ta5+doping delivered the larger cell lattice parameters and higher cation ordering,which was helpful to improve the rate property and discharge capacity at low *** li_(2)MnO_(3) layer was tightly adhered on the outside of liNi_(0.90)Co_(0.05)Mn_(0.05)O_(2),which could effectively relieve the electrolyte attacking and sustain the particle morphology *** a result,2 wt%li_(2)MnO_(3) coated li(Ni_(0.90)Co_(0.05)Mn_(0.05))_(0.98)Ta_(0.02)O_(2) exhibited the outstanding discharge capacity of 150.2 mAh g^(−1) at 10.0 large current density and 140.6 mAh g^(−1) at−30℃ as well as the remarkable capacity retention of 93.1%after 300 ***,the pouch full batteries obtained by 2 wt%li_(2)MnO_(3) coated li(Ni_(0.90)Co_(0.05)Mn_(0.05))_(0.98)Ta_(0.02)O_(2) also showed the more stable storage capability,cyclic property in comparison with bare liNi_(0.90)Co_(0.05)Mn_(0.05)O_(2).

关键词： liNi_(0.90)Co_(0.05)Mn_(0.05)O_(2) li supplement li_(2)MnO_(3)coating High chemical valence state Ta5+doping Enhanced safety and electrochemical property

Mechanism, behaviour and application of iron nitrate modified carbon nanotube composites for the adsorption of arsenic in aqueous solutions

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Chinese Journal of Chemical Engineering 2023年第8期60卷 26-36页

作者： Yingli li Zhishuncheng li guangfei Qu Rui li Shuaiyu liang Junhong Zhou Wei Ji Huiming tang Faculty of Environmental Science and Engineering Kunming University of Science and TechnologyKunming 650500China National Regional Engineering Research Center-NCW Kunming 650500China

In this study,ferric nitrate modified carbon nanotube composites (FCNT) were prepared by isovolumetric impregnation using carbon nanotubes (CNTs) as the carrier and ferric nitrates the active *** batch experiments showed that FCNT could effectively oxidize As(III) to As(V) and react with it to form stable iron arsenate *** the dosage of FCNT was 0.1 g·L^(–1),pH value was 5–6,reaction temperature was 35℃ and reaction time was 2 h,the best arsenic removal effect could be achieved,and the removal rate of As(V) could reach 99.1%,which was always higher than 90%under acidic *** adsorption results of FCNT were found to be consistent with Langmuir adsorption by static adsorption isotherm fitting,and the maximum adsorption capacity reached 118.3 mg·g^(-1).The material phase and property analysis by scanning electron microscopy,Brunauer–Emmett–Teller,Fourier transform infrared spectoscopy,X-ray photoelectron spectroscopy and other characterization methods,as well as adsorption isotherm modeling,were used to explore the adsorption mechanism of FCNT on *** was found that FCNT has microporous structure and nanostructure,and iron nanoparticles are loosely distributed on CNTs,which makes the material have good oxidation,adsorption and magnetic separation *** migrates on the surface of FCNT composites is mainly removed by forming insoluble compounds and *** the results show that FCNT treats arsenic at low cost with high adsorption efficiency,and the results also provide the experimental data basis and theoretical basis for arsenic contamination in groundwater.

关键词： Carbon nanotubes As(V) Adsorption Nanocomposites Impregnation method

Effects of the coupling process on shortwave radiative feedback during ENSO in FgOALS-g

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Atmospheric and Oceanic Science Letters 2016年第5期9卷 337-342页

作者： PU Ye tang Yan-li li li-Juan State Key Laboratory of Numerical Modeling for Atmospheric Sciences and geophysical Fluid Dynamics (LASg) Institute of Atmospheric PhysicsChinese Academy of Sciences College of Earth Science University of Chinese Academy of Sciences

Satisfactory simulation of negative shortwave（SW） radiative feedback during ENSO in the equatorial Pacific remains a challenging issue for climate models. Previous studies have focused on specific physical processes in the atmospheric and/or oceanic model, but the coupling process in coupled models has not received much attention. To investigate the coupling effect on SW feedback, two versions of an AgCM and their corresponding coupled models are analyzed. Results indicate that the effects of the coupling process in the two versions lead to weakening and enhancement of the negative feedback in the earlier and new versions, respectively, mainly due to their different changes in cloud fraction feedback and dynamical feedback. Further examination of the nonlinearity of the feedback reveals that the opposite coupling effects in the two versions originate from their different responses to El Nio and to La Nia.

关键词： Shortwave radiative feedback ENSO coupling effect gAMIL FgOALS-g